#define _CRT_SECURE_NO_WARNINGS 1
#include<iostream>
using namespace std;
#include<vector>
int main()
{
	int ar[] = { 1,2,3,4,5,6,7,8,9,10 };

	int n = sizeof(ar) / sizeof(int);

	vector<int> v(ar, ar + n);

	cout << v.size() << ":" << v.capacity() << endl;

	v.reserve(100);

	v.resize(20);

	cout << v.size() << ":" << v.capacity() << endl;

	v.reserve(50);

	v.resize(5);

	cout << v.size() << ":" << v.capacity() << endl;
	return 0;
}